Objective Lens

Objective Lens

Usage conditions apply
An astronomical transit instrument made by Pistor & Martins, of Berlin, was installed in the U.S. Naval Observatory in Washington, D.C., in 1861, and moved to the new observatory site in the 1890s. The is the 9-inch aperture objective lens from that instrument.
Currently not on view
Object Name
objective lens
Pistor & Martins
place made
Germany: Schleswig-Holstein, Berlin
overall: 4 3/4 in x 12 3/4 in; 12.065 cm x 32.385 cm
overall: 4 1/2 in x 13 1/2 in; 11.43 cm x 34.29 cm
ID Number
accession number
catalog number
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Medicine and Science: Physical Sciences
Data Source
National Museum of American History
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